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  <title>Returns the timezone offset</title>

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</div><hr /><div id="datetime.getoffset" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">DateTime::getOffset</h1>
  <h1 class="refname">DateTimeImmutable::getOffset</h1>
  <h1 class="refname">DateTimeInterface::getOffset</h1>
  <h1 class="refname">date_offset_get</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.2.0)</p><p class="refpurpose"><span class="refname">DateTime::getOffset</span> -- <span class="refname">DateTimeImmutable::getOffset</span> -- <span class="refname">DateTimeInterface::getOffset</span> -- <span class="refname">date_offset_get</span> &mdash; <span class="dc-title">Returns the timezone offset</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-datetime.getoffset-description">
  <h3 class="title">说明</h3>
  <p class="para">面向对象风格</p>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">int</span> <span class="methodname"><strong>DateTime::getOffset</strong></span>
    ( <span class="methodparam">void</span>
   )</div>

  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">int</span> <span class="methodname"><strong>DateTimeImmutable::getOffset</strong></span>
    ( <span class="methodparam">void</span>
   )</div>

  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">int</span> <span class="methodname"><strong>DateTimeInterface::getOffset</strong></span>
    ( <span class="methodparam">void</span>
   )</div>

  <p class="para rdfs-comment">过程化风格</p>
  <div class="methodsynopsis dc-description">
   <span class="type">int</span> <span class="methodname"><a href="function.date-offset-get.html" class="methodname">date_offset_get</a></span>
    ( <span class="methodparam"><span class="type"><a href="class.datetimeinterface.html" class="type DateTimeInterface">DateTimeInterface</a></span> <code class="parameter">$object</code></span>
   )</div>

  <p class="para rdfs-comment">
   Returns the timezone offset.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-datetime.getoffset-parameters">
  <h3 class="title">参数</h3>
  <dl>

   <dt>
<em><code class="parameter">object</code></em></dt>

<dd>
<p class="para">仅为过程化风格：由 <span class="function"><a href="function.date-create.html" class="function">date_create()</a></span> 返回的 <a href="class.datetime.html" class="classname">DateTime</a> 类型的对象。</p></dd>

  </dl>

 </div>


 <div class="refsect1 returnvalues" id="refsect1-datetime.getoffset-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns the timezone offset in seconds from UTC on success
    或者在失败时返回 <strong><code>FALSE</code></strong>.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-datetime.getoffset-examples">
  <h3 class="title">范例</h3>
  <div class="example" id="example-2210">
   <p><strong>Example #1 <span class="function"><strong>DateTime::getOffset()</strong></span> example</strong></p>
   <div class="example-contents"><p>面向对象风格</p></div>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$winter&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">DateTime</span><span style="color: #007700">(</span><span style="color: #DD0000">'2010-12-21'</span><span style="color: #007700">,&nbsp;new&nbsp;</span><span style="color: #0000BB">DateTimeZone</span><span style="color: #007700">(</span><span style="color: #DD0000">'America/New_York'</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">$summer&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">DateTime</span><span style="color: #007700">(</span><span style="color: #DD0000">'2008-06-21'</span><span style="color: #007700">,&nbsp;new&nbsp;</span><span style="color: #0000BB">DateTimeZone</span><span style="color: #007700">(</span><span style="color: #DD0000">'America/New_York'</span><span style="color: #007700">));<br /><br />echo&nbsp;</span><span style="color: #0000BB">$winter</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getOffset</span><span style="color: #007700">()&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #0000BB">$summer</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getOffset</span><span style="color: #007700">()&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>过程化风格</p></div>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$winter&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">date_create</span><span style="color: #007700">(</span><span style="color: #DD0000">'2010-12-21'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">timezone_open</span><span style="color: #007700">(</span><span style="color: #DD0000">'America/New_York'</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">$summer&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">date_create</span><span style="color: #007700">(</span><span style="color: #DD0000">'2008-06-21'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">timezone_open</span><span style="color: #007700">(</span><span style="color: #DD0000">'America/New_York'</span><span style="color: #007700">));<br /><br />echo&nbsp;</span><span style="color: #0000BB">date_offset_get</span><span style="color: #007700">(</span><span style="color: #0000BB">$winter</span><span style="color: #007700">)&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #0000BB">date_offset_get</span><span style="color: #007700">(</span><span style="color: #0000BB">$summer</span><span style="color: #007700">)&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

   <div class="example-contents"><p>以上例程会输出：</p></div>
   <div class="example-contents screen">
<div class="cdata"><pre>
-18000
-14400
</pre></div>
   </div>
   <div class="example-contents"><p>
    Note: -18000 = -5 hours, -14400 = -4 hours.
   </p></div>
  </div>
 </div>


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